HELP diagram on foot/pedal cord for kenmore 1750
please i need help i have a KENMORE 1750 SEWING MACHINE that was having trouble turning on,i had to be moving around the power cable around so i took the screws off and one of the plugs was loose so i solder it,but when i got up to get the screwdriver my cat was playing with the wires so know i dont know which goes where i was looking at one of you're diagrams but it dose'nt tell you negative or positive and i don't understand it can you please help me please!!!!!